标题： 用CoGeNT探测暗物质流 显示英文标题

标题： Probing dark matter streams with CoGeNT

摘要： 我们研究了CoGeNT对未来暗物质流存在的敏感性，并发现考虑数据中的流可能会导致结果解释上的差异。 我们展示了不同晕参数下允许的粒子质量和截面，假设为自旋无关的弹性散射。 作为示例，我们选择一个速度分布与人马座流（以及太阳邻域）相同的流，并发现当暴露量为$\sim$ 10千克年时，CoGeNT的结果预计可以在95%（99.7%）置信水平上排除仅由SHM组成的晕，而支持SHM+流组成的晕，前提是该流贡献了当地暗物质密度的3%（5%）。 如果存在显著的流成分，除非考虑到流的存在，否则可能导致粒子质量和截面的错误估计。 我们得出结论，CoGeNT实验对流是敏感的，在分析实验结果时应考虑流的可能性。 显示英文摘要

摘要： We examine the future sensitivity of CoGeNT to the presence of dark matter streams and find that consideration of streams in the data may lead to differences in the interpretation of the results. We show the allowed particle mass and cross section for different halo parameters, assuming spin-independent elastic scattering. As an example, we choose a stream with the same velocity profile as that of the Sagittarius stream (and in the Solar neighborhood) and find that, with an exposure of $\sim$ 10 kg year, the CoGeNT results can be expected to exclude the SHM-only halo in favor of an SHM+stream halo at the 95% (99.7%) confidence level provided the stream contributes 3% (5%) of the local dark matter density. The presence of a significant stream component may result in incorrect estimates of the particle mass and cross section unless the presence of the stream is taken into account. We conclude that the CoGeNT experiment is sensitive to streams and care should be taken to include the possibility of streams when analyzing experimental results.